The modes of oscillation of a Menzel prominence
We investigate numerically the normal modes of oscillation of Menzel's (1951) 2D, isothermal magnetostatic equilibrium model of a prominence, comparing its periods with those predicted from the magnetoacoustic modes of a nongravitating, uniform, bounded medium. The periods of the fundamental ma...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 1993-06, Vol.273 (2), p.642-646 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
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| Online-Zugang: | Volltext |
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| Zusammenfassung: | We investigate numerically the normal modes of oscillation of Menzel's (1951) 2D, isothermal magnetostatic equilibrium model of a prominence, comparing its periods with those predicted from the magnetoacoustic modes of a nongravitating, uniform, bounded medium. The periods of the fundamental magnetoacoustic modes are changed only slightly in the presence of stratification and field-line curvature. An order of magnitude estimate for these periods is thus provided by a simple slab-type model of a prominence. (Author) |
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| ISSN: | 0004-6361 1432-0746 |